ObjectiveTo explore the CT imaging features and independent risk factors for cystic pulmonary nodules and establish a malignant probability prediction model. Methods The patients with cystic pulmonary nodules admitted to the Department of Thoracic Surgery of the First People's Hospital of Neijiang from January 2017 to February 2022 were retrospectively enrolled. They were divided into a malignant group and a benign group according to the pathological results. The clinical data and preoperative chest CT imaging features of the two groups were collected, and the independent risk factors for malignant cystic pulmonary nodules were screened out by logistic regression analysis, so as to establish a prediction model for benign and malignant cystic pulmonary nodules. ResultsA total of 107 patients were enrolled. There were 76 patients in the malignant group, including 36 males and 40 females, with an average age of 59.65±11.74 years. There were 31 patients in the benign group, including 16 males and 15 females, with an average age of 58.96±13.91 years. Multivariate logistic analysis showed that the special CT imaging features such as cystic wall nodules [OR=3.538, 95%CI (1.231, 10.164), P=0.019], short burrs [OR=4.106, 95%CI (1.454, 11.598), P=0.008], cystic wall morphology [OR=6.978, 95%CI (2.374, 20.505), P<0.001], and the number of cysts [OR=4.179, 95%CI (1.438, 12.146), P=0.009] were independent risk factors for cystic lung cancer. A prediction model was established: P=ex/(1+ex), X=–2.453+1.264×cystic wall nodules+1.412×short burrs+1.943×cystic wall morphology+1.430×the number of cysts. The area under the receiver operating charateristic curve was 0.830, the sensitivity was 82.9%, and the specificity was 74.2%. ConclusionCystic wall nodules, short burrs, cystic wall morphology, and the number of cysts are the independent risk factors for cystic lung cancer, and the established prediction model can be used as a screening method for cystic pulmonary nodules.
ObjectiveTo compare the clinical efficacy of cone-shaped gastric tube combined with cervical end-to-end stratified manual anastomosis and conventional tubular stomach combined with neck end-to-end mechanical side-to-side anastomosis in thoracoscopic and laparoscopic esophagectomy for esophageal cancer. MethodsThe clinical data of consecutive patients treated by thoracoscopic and laparoscopic esophagectomy for esophageal cancer in the Department of Cardiothoracic Surgery of the First People's Hospital of Neijiang from January 1, 2018 to March 25, 2021 were analyzed. The patients were divided into a cone-shaped gastric tube manual group (treated with cone-shaped gastric tube combined with cervical end-to-end stratified manual anastomosis) and a conventional tubular stomach mechanical group (treated with conventional tubular stomach+end-to-end mechanical side-to-side anastomosis). The anastomotic time, intraoperative blood loss, number of lymph node dissection, anastomotic fistula, anastomotic stenosis, anastomotic cost, sternogastric dilatation, gastroesophageal reflux symptoms, and postoperative complications were compared and analyzed between the two groups. ResultsA total of 161 patients were enrolled, including 112 males and 49 females aged 40-82 years. There were 80 patients in the cone-shaped gastric tube manual group, and 81 patients in the conventional tubular stomach mechanical group. There was no statistical difference in the intraoperative blood loss, number of lymph nodes dissected, hoarseness, pulmonary infection, arrhythmia, respiratory failure or chylothorax between the two groups (P>0.05). The anastomosis time of the cone-shaped gastric tube manual group was longer than that of the conventional tubular stomach mechanical group (28.35±3.20 min vs. 14.30±1.26 min, P<0.001), but the anastomotic cost and incidence of thoracogastric dilatation in the cone-shaped gastric tube manual group were significantly lower than those of the conventional tubular stomach mechanical group [948.48±70.55 yuan vs. 4 978.76±650.29 yuan, P<0.001; 3 (3.8%) vs. 14 (17.3%), P=0.005]. The incidences of anastomotic fistula and anastomotic stenosis in the cone-shaped gastric tube manual group were lower than those in the conventional tubular gastric mechanical group, but the differences were not statistically significant (P>0.05). The gastroesophageal reflux scores in the cone-shaped gastric tube manual group were lower than those in the conventional tubular gastric mechanical group at 1 month, 3 months, 6 months and 1 year after the operation (P<0.05). Logistic regression analysis showed that digestive tract reconstruction method was the influencing factor for postoperative thoracogastric dilation, which was reduced in the cone-shaped gastric tube manual group. ConclusionCone-shaped gastric tube combined with cervical end-to-end stratified manual anastomosis can significantly reduce the incidence of thoracogastric dilatation after thoracoscopic and laparoscopic esophagectomy for esophageal cancer and save hospitalization costs, with mild gastroesophageal reflux symptoms, and it still has certain advantages in reducing postoperative anastomotic fistula and anastomotic stenosis, which is worthy of clinical promotion.